Broom-sewing machine.



PATENTBD DEG. 12, 1905. A. E. MILLER.

BROOM SEWING MACHINE.

APPLIOATION FILED 00T. 21,1901.

. I we Eg MW Y No. 806,823. PATENTED DEG. 12, 1905. A. E. MILLER. BROOMSEWING MACHINE.

APPLICATION FILED OCT. 21,1901.

235 SHEETS-#SHEET 2.

No. 806,823. PATENTED DEG. 12, 1905.

A. E. MILLER.

BEooM SEWING MACHINE.

APPLICATION FILED 00T. Y21, 1901.

5 SHBBTS-SHBET 3.

Witnesses l ML l! m No. 806,823. PATENTED DEC. l2, 1905. A. E. MILLER.

BRUOM SEWING MACHINE.

APPLIUATION FILED 00T. 21,1901.

5 SHEETS-SHEBT 4.

Il 'l' Inventor Ch @wmmm l l te; 'si

No. 806,823. PATENTED DBO. 12, 1905.

l A. E. MILLER. BROOM SEWING-MACHINE.

APPLICATION FILED 00T. 2l. 1901.

$ 5 SHEETS-SHEET 5.

Witnesses M5 UNITED STATES PATENT OFFICE.

ANDREW E. MILLER, OF BALTIMORE, MARYLAND, ASSIGNOR, BY MESNEASSIGNMENTS, TO HAMILTON CASSARD, OF BALTIMORE, MARYLAND. j

BROOIVI-SEWING MACHINE.

y Specication of Letters Patent.

Patenten` Dec.' 12, 1905.

Application filed 0ctober`2l, 1901. Serial No. 79,472.

T0 a/Z/ whom, it may concern.-

Be it known that I, ANDREW E. MILLER, a subject of the King of GreatBritain, residing at Baltimore, State of Maryland, have invented certainnew and useful Improvements in' Broom-Sewing Machines, of which thefollowing is a specification.

This invention relates to broom-sewing machinery, the particular machineillustrated being especially adapted to sew whisk-brooms. Most of theelements of the machine, however, are capable of use in machines forsewing the large sizes of brooms which are prof vided with long handles.Y

The object of the invention is to provide simple machine which will dogood work rapidly and which can be built at a reasonable cost andoperated by unskilled labor.

The invention will be described with reference to the accompanyingdrawings,in which- Figure 1 is a front elevation of the entire machine,the vise being closed. Fig. 2 is a perspective View of the vise only,showing it open. Fig. 3 is a plan View of the entire machine. Fig. 4 isa section about on the line 4 4 of Fig. 3, illustrating thefeeding-cams. Fig. 5 is a partial left side elevation with parts brokenaway. Fig. 6 is a detail. Fig. 7 is a partial right side elevationshowing the parts in the position occupied when the machine is running.Fig. 8 is a similar view showing the parts in position occupied when themachine is stopped. Fig. 9 is a detail view showing the guideway in thelink and the guide-block and crank-pin for operating the needle-arms.

Referring to the drawings, 11 indicates the frame, which may be of anydesign suitable for sustaining the mechanism. As shown, the frame is inthe form of a hollow rectangular body having two posts 12 on its forwardcorners and two posts 13 on its rear corners.

The @isa-The vise comprises a fixed jaw 14 and a movable jaw 15,supported on a rocking vise-frame 16, which rocks backward and forwardon trunnions 17. The fixed jaw, as shown, is integral with thevise-frame, and the movable jaw is pivoted thereto at 18. The movablejaw is connected by links 19 with arms 20 upon a rock-shaft 21, carriedon the back of the fixed jaw. Another arm 22 on rock-shaft 21 isconnected by link 23 with the short arm 24 of a vise-operating lever 25,journaled upon a pivot-bolt 25'?, said lever being preferably providedwith a handle 26. As shown in Fig. 2, the handle is thrown over to theleft and the jaw is wide open. When the broom is placed in position,`the handle 26 is moved to the right into the position shown in Fig. 1,which has the effect of closing the vise-jaws firmly upon the broom. Inthis position the parts are held `securely by a spring-latch 27, whichisattached t0 an adjustable arm 27u. Said arm, as shown in Figs. 1, 2,and 5, is journaled at its upper end upon the rock-shaft 21 and has atits lower end an elongated eye or link 27D, through whichy thepivot-bolt 25a extends. The central part of the bolt is angular incross-section .for convenience in turning with a wrench,.and its innerreduced end is threaded and extends into a threaded openingin the vise.The arm 27 may be held in any desired adjustment by turning thepivot-bolt so as 'to clamp the link 27bvbetween thek angular portion oflthe bolt and the vise. By moving the arm in one direction the latch 27is raised, and bymoving said arm in the opposite direction lthe latch islowered. The position of the latch which engages the arm 22 obviouslydetermines the distance between the vise-jaws when the latter are closedupon a broom. lThe latch may be thrown off by pressing upon theconnected arm 28, which is situated conveniently to the handle 26 whenthe vise is closed.

When the broom has been arranged and clamped in the'vise ready forsewing, `the vise is moved back to its rearmost position, which is theposition at `which the rst stitch is formed. To regulate the point atwhich the iirst stitch is formed, an adjustable stop for the vise isprovided. As shown, a projection 29, integral with the vise-frame,engages the end of a rod 30, which slides in bearings 31 and 32 on theframe. The rod 30 is normally pressed toward the vise by a spring 33.`On its rear yend it is provided with an adjustable threaded nut 34,which may be set at any desired distance from the stop 35 on the end ofthe box 32. The nut IOO 34 is properly adjusted, and when the vise isthrown back it continues to move backward until the nut 34 engaes thestop 35.

Starz/ing cmd stoppz'ng devices-The mathe upper end of which isconnected to an section.

arm 38 of a three-arm lever which is pivoted at 39. Arm 38 is connectedby an adjustable link 40 to a clutch-lever 41, pivoted at 42. Power iscommunicated to a belt-pulley 43, and the clutch, which may be ofanysuitable construction, connects and disconnects said pulley with adisk 44, the pulley and disk being mounted on the shaft 45. When theclutch is thrown out, the connected parts are in the position shown inFig. 8 and are held in this position by a spring 46. Gravitylatch 47vstands over the ends 48 of arm 49 of the three-arm treadle-lever. Thislatch prevents the lever from being turned and the clutch from beingthrown in when the vise is in its forward position. Before the sewingmechanism can be started the vise must be moved rearward. into thesewing position, which movement causes the rod 3() to move the latch 47-out of the path of the lever 48. Such movement unlocks thetreadle-lever and permits the clutch to be operated by the treadle. Whenthe treadle is pushed down, the parts assume the position shown in Fig.7 and are held in this position by a latchlever 50, which engages theupper end of arm 51 of the treadle-lever, the latch being drawn intothis position by spring 57. The latch-lever 50 is released automaticallyafter each row of stitches is sewed in a manner to be presentlydescribed. When said latchlever releases the treadle-lever, the spring46 rocks the latter and throws out the clutch.

At the same time a brake-Shoe 52 is 'auto-- matically applied to a disk53 on the camshaft 54. This is accomplished by connecting the brake-shoewith the arm 51 of the treadle-lever bya link 55, which link forms atoggle connection with said arm 51, adapted to apply the brake withgreat power. The brakeshoe is secured near one end to a rock-shaft 56,which is mounted in a fixed bearing 57.

Wee-feeding meedraaien-To produce a series of stitches, the vise must befed 'step by step in synchronism with the movement of thesewing-needles. A simple and effective feeding device is illustrated inthe drawings, particularly in Figs. 4 and 5. The vise has a tendency tomove forward, such tendency in the present instance being imparted to itby a weight 58 on the forward side of the vise-frame. To the vise ispivotally connected a sliding rod 59, which is preferably fiat andrectangular in cross-section. Beneath this rod is another sliding rod60, of similar cross- The upper rod is subjected to the action of aclamp 61, controlled by a cam-lever 62, having a cam-roll 63, running oncam 64. The lower rod is controlled by a similar clamp 65, operated bycam-lever 66, roll 67, and cam 68. Both cam-levers are normally drawntoward their cams by springs' 6 9 and 70, respectively. The cams arediametrically opposite and arranged on a cam-wheel 71, which is mountedon the cam-shaft 54. An arm 56,

secured to the rock-shaft 56, engages the camlevers when the brake isapplied to stop the machine and rocks said levers in a direction torelease the clamps from the sliding feedrods, thus releasing the visefrom the feed mechanism when the machine is brought to a stop. As theclamps are held out of engagement with the feed-rods by said arm, whilethe machine is stopped the vise may Ain starting be moved backward tothe sewing mechanism without being impeded by the clamps.

The rods 59 and 60 are connected by a stoplink 72, which is pivotallyconnected to both rods and limits the relative movement of the rods. Therelative movement in one direction is limited by an arm 73 of thestop-link coming in contact with a stop 74 on the rod 59. The relativemovement in the opposite direction is limited by an arm 75 of thestoplink coming in contact with a stop 76 upon the upper side of rod 59.Stop 76 is carried by a lever 77, pivoted to rod 59, and the location ofthe stop may be adjusted by a screw 7 8, which works in the lever andbears upon the rod. Lever 77 has an arm 79 extending downward into theplane of the rod 60. This arm is connected with the rod 60 by a spring80, which spring holds the screw 78 against the rod 59 and at the sametime constantly tends to draw the rod 60 forward or toward thevise-frame.

The rods 59 and 60, their connecting element, the part 72 75, and thegripping devices 61 65 may be termed the feed membersthat is, themembers which coperate with the stop to feed the vise and broom to thesewing mechanism. The feed member 72 75 has a rocking movement upon apivot passing through the bar 59, which movement is varied by adjustmentof the stop 76.

It is to be particularly noted that I do not limit my invention to thedescribed construction and arrangement of the means for connecting thefeed members to the vise or for coperating with the stop to control thelength of the step-by-step movements of the vise, as these parts mayobviously be constructed in many diiferent ways.

The operation of the feeding devices is as follows: The vise has atendency to move forward by reason of the overbalancing weight 58. Theclamps 61 and 65 alternately release the rods 59 and 60. When rod 59 isreleased, the vise and rod move forward until the arm 75 of thestop-link comes in contact with the stop 76. These parts are then heldin this position until the rod 59 is clamped. While the rod 59 isclamped the rod 60 is momentarily released by the clamp 65, and whilereleased it is drawn forward by the spring 8O until the stop-arm 73comes in contact with the stop74. It will be seen that they length ofstitch is determined by the amount of vibration or rocking movement ofthe stoplink 72 and that this movement may be increased or diminished bythe adjusting-screw 78. By this simple mechanism the vise is fed to thesewing mechanism and the length of stitch is regulated. At thecompletion of thelast stitch the mechanism is automatically stopped. Thestopping device comprises a rod 81, pivotally connected to an arm 82 atthe rear of the vise. Rod81 extends through an opening 83 in the upperend of the lockinglever 50. Midway of the rod is a shoulder 84. When thevise is thrown back, the shoulder is moved considerably to the rear ofthe lever 50. As the vise moves forward the shoulder 84 engages thelever 50 as the last stitch is formed, and the further movement of thevise rocks the lever and throws the machine instantly out of operationin a manner heretofore explained.

To provide for stopping at different points for different widths ofbrooms, the connection of the rod 81 with the vise is adjustable in theslot 85. The rod 81 has a rearward extension 86, which permits the viseto move to its foremost position without disengaging the rod from thelever 50.

Sewing mectam'sm.-Tlie sewing-needles 87 are carried in heads 88, whichslide on horizontal guidesA 89. The needles are reciprocated by rockingarms 90, which are connected to the heads by links 91. The arms 90 aremounted on the rear posts 13 of the main frame. and they are connectedtogether by a link 92. Link 92 is constructed in two parts centrallyconnected by bolts 93. In the middle of the link is a vertical slot inwhich slides a box 94, which forms the bearing of a crankpin 95, carriedby the'disk 44 on shaft 45, and a crank-disk 96 on shaft 54.

The needle-threading devices of the present application aresubstantially identical with those shown in my pending application,Serial N o. 32,574,1iled October 10, 1900,and a detailed description andillustration of them in this case may therefore be omitted. Theprincipal features of the devices are illustrated as follows: There aretwo threading arms or levers 100 and 101, having their rear endspivotally connected to cam-levers 102, which have rolls engaging acam-groove 103 in the cam-wheel 71 on the shaft 54. In the forward endsof the arms 100 and 101 are eyes 104, through which the needles passalternately. There are also thread-clamping fingers 105, which arespring-pressed and operated to clamp the thread at the proper time. Theright-hand arm 101 carries the hook or support 106, in which the threadis placed by the operator before the iirst stitch is taken. Themovements of the arm 101 are controlled by a cam-slot 107, while themovements of the arm 100 are controlled by a reversed cam-slot 108.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is*

1. In a broom-sewing machine, the combination of a rocking vise-framehaving avisejaw fixed thereon, a second jaw pivotally secured to thevise-frame, a rock-shaft pivotally mounted on the fixed jaw, connectionsbetween said rock-shaft and the movable jaw, a lever connected to therock-shaft for closing the vise, a latch for locking the lever when thevise is closed, a pivotally-mounted arm to which said latch isconnected, and means for securing said arm in various adjustments.

2. In a broom-sewing machine, the combination with the rockingvise-frame having fixed and movable jaws, of an arm pivotally mountedupon the xed jaw, a link connecting said arm with the movable jaw, anoperating-lever arranged to rock said arm, and a latch adjustablysecured to the fixed member of the vise-frame and 4adapted to lock saidparts when the vise-jaws are closed upon a broom.

3. In a broom-sewing machine, the combination with a rocking vise-framehaving fixed and movable jaws, the arms pivotally mounted upon the xedjaw, a link connecting one of said arms with the movable jaw, anoperating-lever, aV link connecting said operatinglever with the otherarm, and a latch adjustably secured to the fixed jaw and adapted toengage and lock the parts when the vise-jaws are closed upon a broom.

4. In a broom-sewing machine, the visefeeding mechanism comprising apair of relatively movablel bars, means p for alternately holding andreleasing said bars, a connection between one of the bars and the vise,and means connected with the said bars whereby the movement of each baris limited by the other.

5. In a broom-sewing machine, the combination with sewing mechanism,of avise, means connected to the vise and constantly tending to move a broomcarried by the vise from operative position relative to the sewingmechanism, means for holding the vise stationary with the broom inposition to be operated on by the sewing mechanism, and means forintermittently releasing said holding means and including a stop anddevices for adjusting the same to permit variation in the length ofstitch.

6. In a broom-sewing machine, the combination of a rocking vise-framehaving a visejaw fixed thereon, a second jaw pivotally connected to thevise-frame, a rock-shaft pivotally mounted on the xed jaw, connectionsbetween said rock-shaft and the movable jaw, a lever connected to therock-shaft for closing the vise, and a spring-latch for locking the1ever when the vise is closed.

7. In a broom-sewing machine, the 'combination with the rockingvise-frame, of the visejaws connected thereto. the rock-shaft on onevise-jaw, the arms and links connecting said shaft with the othervise-jaw, the operatinglever for closing the vise, connections substan-IOO IIO

tially as described between said lever and the rock-shaft, and means forlocking and unlocking the vise.

8. In a broom-sewing machine, the combination with the rockingvise-frame, of the visejaws connected thereto, the rock-shaft on onevise-jaw, connections between said shaft and the other vise-jaw, theoperating-lever for closing the vise, connections between said lever andthe rock-shaft, and a spring-latch connected to the rock-shaft andadapted to lock the lever when the vise is closed.

9. In a broom-sewing machine, the combination of a rocking vise-framehaving a visejaw fixed thereon, a second jaw pivotal'ly connected to thevise-frame, a rock-shaft mounted on the fixed jaw and connected with themovable jaw, a lever connected to the rockshaft for moving the movablevise-jaw toward and from the fixed jaw, an arm mounted on saidrock-shaft, and a spring-latch connected with said arm and adapted toengage the lever when the vise is closed.

l0. In a broom-sewing machine, the combination with the vise, of feedingmechanism comprising a pair of bars one of which is connected with thevise, clamps arranged to alternately hold and release said bars, astoplink connecting said bars, a stop arranged to limit the movement ofsaid link in one direction, and an adjustable stop arranged to limit themovement of the link in the other direction, whereby the length ofstitch may be,

varied.

11. In a broom-sewing machine, the combination with the movable vise, offeeding mechanism comprising two sliding bars, clamps operating to holdand release said bars alternately, aconnection between one of said barsand the vise-frame, a spring connecting said bars, a stop-link pivotallyconnected to the bars, and stops for limiting the movement of said linkwhereby the relative movement of the bars is regulated.

12. In a broom-sewing' machine, the combination with the vise-frame, offeeding mechanism therefor comprising a pair of sliding rods, clamps forholding and releasing said rods alternately, cams and cam-levers foroperating said clamps, a stop adjustably connected to one of said bars,a stop-link pivotally connected to both of said bars, and a springconnection between said bars, for-the purpose set forth.

13. In a broom-sewing machine, the combination with the vise-framemovable to and from the sewing mechanism, of a clutch for connecting thesewing mechanism with the power, a lever for operating the clutch andmeans for preventing the operation of the lever to start the machinewhile the vise-frame is apart from the sewing mechanism.

14. In a broom-sewing machine, the combination with the sewingmechanism, and the vise-frame movable to and from the sewing mechanism,of a treadle -for starting the machine, and means for preventing theoperation of the treadle while the vise-frame is apart from the sewingmechanism.

l5. In a broom-sewing machine, the combination with the sewing mechanismand the vise movable to and from said mechanism, of a clutch forstarting the machine, a lever connected with said clutch, a springarranged to throw said lever to stop the machine, a lock or detentengaging said lever to prevent the stoppage of the machine, and a deviceconnected with the vise for operating said detent to permit the machineto be stopped.

16. In a broom-sewing machine, the combination with the sewingmechanism, and the vise movable to and from said mechanism, of a clutchfor starting and stopping the machine, a brake device, a lever havingconnections to said clutch and brake, a latch for holding said lever inthe stopping position, a second latch or detent for holding said leverin the starting position and means whereby said latches are disengagedalternately by the vise in its movements to and from the sewingmechanism.

17. In a broom-sewing machine, the combination with the sewing mechanismand the vise, of the feeding mechanism connected with the visecomprising a pair of bars, one

of which is connected with the vise, and means for alternately holdingand releasing said bars, cams and cam-leversfor operating the feedingmechanism, a brake and means for automatically applying the same to stopthe machine, and means for automatically disengaging the bars from theholding mechanism to permit the vise to move away from the sewingmechanism on the completion of each row of stitches.

18. In a broom-sewing machine, the combination with the vise, theneedle-heads and the guides for said heads, of the arms arranged to rockin a horizontal plane, the link pivotally connecting said arms, thevertical guide or slot in said link, the box movably mounted in saidguide, and the shaft having a crankpin working in said box, for thepurpose set forth.

In testimony whereof I aiix my signature in presence of two witnesses.

ANDREW E. MILLER.

Witnesses:

THos. KELL BRADFORD, LEE PURGELL.

IOO

